Rogue waves: fantascience or reality?

Series
Applied and Computational Mathematics Seminar
Time
Monday, October 28, 2013 - 2:00pm for 1 hour (actually 50 minutes)
Location
Skiles 005
Speaker
Francesco G. Fedele – GT Civil Eng and ECE – fedele@gatech.eduhttp://www.ce.gatech.edu/people/faculty/511/overview
Organizer
Sung Ha Kang
Rogue waves are unusually large waves that appear from nowhere at the ocean. In the last 10 years or so, they have been the subject of numerous studies that propose homoclinic orbits of the NLS equation, the so-called breathers, to model such extreme events. Clearly, the NLS equation is an asymptotic approximation of the Euler equations in the spectral narrowband limit and it does not capture strong nonlinear features of the full Euler model. Motivated by the preceding studies, I will present recent results on deep-water modulated wavetrains and breathers of the Hamiltonian Zakharov equation, higher-order asymptotic model of the Euler equations for water waves. They provide new insights into the occurrence and existence of rogue waves and their breaking. Web info: http://arxiv.org/abs/1309.0668